Source-backed facts and open questions
Each claim includes source links and the date it was checked. Documented facts do not confirm a complete manufacturing specification. Unsupported identifies a documented conflict; quote-required identifies a condition needing confirmation.
quantity · documented
Special-edition calculator minimum is 100 copies.
Checked 2026-09-30 · Source
binding · documented
Sewn hardcover with printed, cloth or PU covers.
Checked 2026-09-30 · Source
dimensions · documented
Width 95–320 mm and height 95–420 mm are documented.
Checked 2026-09-30 · Source
pages · unknown
Complete page-count and paper-stock compatibility is not established by the available evidence.
Checked 2026-09-30 · Source
print · quote-required
Exact interior ink, paper, file specifications and their finish compatibility require a quote.
Checked 2026-09-30 · Source
finishes · documented
Deluxe combinations explicitly include foil, painted or gilded edges, printed endpapers, ribbon and packaging. Exact selections still require a quote.
edges · documented
Painted and gilded edges are documented; arbitrary printed edge artwork is not established.
Checked 2026-09-30 · Source
variants · unknown
A/B covers are documented; per-variant minimum quantities are unknown.
Checked 2026-09-30 · Source
fulfillment · unknown
Bulk door-to-door shipping is documented. Direct-to-reader fulfillment is unknown.
Checked 2026-09-30 · Source
production · documented
Own production in Shanghai, China.
Checked 2026-09-30 · Source
proofs · documented
Digital and physical proofs are documented.
Checked 2026-09-30 · Source